Rule History

SID: 2029801 • Source: et/open

Versions (4)

Version DetailsCurrent

Rev: 1 • Apr 2, 2020, 12:00 PM

Message:

ET MALWARE Suspected CHAOS CnC Inbound (openurl)

Rule:

alert tcp $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MALWARE Suspected CHAOS CnC Inbound (openurl)"; flow:established,to_client; dsize:13; content:"b3BlbnVybA==|0a|"; reference:url,github.com/tiagorlampert/CHAOS; classtype:command-and-control; sid:2029801; rev:1; metadata:attack_target Client_Endpoint, created_at 2020_04_02, deployment Perimeter, performance_impact Low, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_04_02;)

Created:

Apr 2, 2020, 12:00 PM

Updated:

Apr 2, 2020, 12:00 PM

DB Created:

Sep 21, 2024, 3:00 AM

DB Updated:

Sep 19, 2025, 10:35 PM

Filename:

rules/emerging-malware.rules